What cables connect Africa, Asia and Australia

We talk about underwater infrastructure, which should work in the next three years. This is the 2Africa cable encircling the African continent, the transatlantic Dunant and JGA North, which will connect Japan and Australia for the first time in 20 years. Discussion – under the cut.

Photo – Cameron venti – Unsplash

Africa cable

In mid-May, several IT companies and telecom operators – including Facebook, Orange, China Mobile and the Internet Society – announced plans to lay an underwater cable 2Africa 37 thousand kilometers long. It will unite Europe, the Middle East and sixteen other countries in Africa, where about a billion people face a lack of Internet access.

2Africa Bandwidth will make 180 Tbps It is in four times morethan all cables going to the African continent at the moment. Project will be the first among comparable in scale, where they use aluminum conductor instead of copper. is he cuts voltage drops, which allows to increase the number of fiber pairs in the cable.

The new cable will be built on Spatial Division Multiplexing (SDM) technology, which optimizes spectral efficiency. In this case, the optical components of the intermediate amplifiers work not with one pair of fibers, but with several at once, which in some cases increases the throughput 70%.

The exact cost of the 2Africa project is still unknown, but Bloomberg experts appreciated its a billion dollars. They plan to commission the cable system in 2023–2024.

But up to this point, several more submarine cables will begin to work.

Who else is developing underwater infrastructure

In 2018, Google announced plans to lay a 6.6 thousand kilometer transatlantic cable connecting the US coast with France. The system is called Dunant. Here, as in the case of 2Africa, SDM technology will be used. It will help ensure a bandwidth of 250 Tbps and expand the capabilities of one of the busiest destinations. Over Atlantic Cables transmit 55% more data than Pacific cables.

They plan to launch Dunant before the end of this year. In March, the French telecommunications company Orange already connected its part of the cable to the terminal equipment in the commune Saint-Hilaire-de-Rieux.

Photo – Hunter nolan – Unsplash

This week in operation introduced JGA North system. Its length is 2.7 thousand kilometers, and the throughput is 24 Tbps, but in the coming year it will increase to 30 Tbps. JGA North connects Japan and Guam and is connected to the JGA South, which runs between Guam and Sydney. This JGA system was the first submarine cable in 20 years to connect Japan and Australia.

In 2021 in the Asian region must earn another 128 Tbit / s submarine cable is SJC2. It will connect China, Japan, Singapore, South Korea and Taiwan. The project cost is estimated at 439 million dollars. An additional cable will have to strengthen the infrastructure and become a reserve in case of unforeseen breaks that occur on this site regularly enough.

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